package com.example.reggie.controller;

import com.example.reggie.common.R;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;

@RestController
@RequestMapping("/common")
@Slf4j
public class CommonController {
    @Value("${reggie.imgpath}")
    private String basePath;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) {
        String oldFileName = file.getOriginalFilename();
        log.info(oldFileName);

        String fileSuffix = oldFileName.substring(oldFileName.lastIndexOf("."));
        String newFileName = UUID.randomUUID().toString() + fileSuffix;


        File dir = new File(basePath);
        if (!dir.exists()) {
            dir.mkdirs();
        }

        try {
            file.transferTo(new File(basePath + newFileName));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
        return R.success(newFileName);
    }

    @GetMapping("/download")
    public  void download(String name, HttpServletResponse response)
    {
        response.setContentType("image/jpeg");
        try {
            FileInputStream fileInputStream = new FileInputStream(new File(basePath+name));
            ServletOutputStream outputStream = response.getOutputStream();
            byte[] bytes = new byte[1024];
            int length=0;
            while (( length = fileInputStream.read(bytes))!=-1) {
              outputStream.write(bytes,0,length);
              outputStream.flush();
            }
           outputStream.close();
            fileInputStream.close();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

    }
}
